^This
Im tired of artys always ALWAYS attacking the med tanks and mammys, blissfully ignorant of the 5 hotties behind them or the havoc in the bushes picking them down with ease.
From the arty's perspective it's hard to tell where the hotwires are. Especially in Field, you likely would not see the hotties because they would be behind the mountain from your POV. In addition, it's simply harder to aim with the arcing shells. You have to constantly look at your score to get feedback on whether or not you're hitting something. Thus, you're first few shots might miss before you find the sweet spot to fire. Lowered splash damage makes precise aim even more important.
It was much easier in the original Ren, it was certain that if you hit the tank the hotties repairing it will get damaged by splash. Not overpowered either, since they could heal each other. But I remember some good arties and techs could push actually push out when GDI is sieging them in Field.